20 Most Recent 2003 Chevrolet Impala Questions & Answers

30-35 Watts @ 4ohms

2003 Chevrolet... | Answered on Nov 13, 2018

make sure wiper motor is grounded if ok check wires for loose or bad ground

2003 Chevrolet... | Answered on Sep 01, 2018

possible door switch open or loose

2003 Chevrolet... | Answered on Sep 01, 2018

Looking at a wiring diagram it look's like it's a possiblity . Free wiring diagrams here http://www.bbbind.com/free-tsb
Test the electrical circuit's using a DVOM - digital volt meter .

2003 Chevrolet... | Answered on May 31, 2018

GM vehicles from 2003 to 2006 had instrument cluster problems were gauges showed wrong data , indicating overheating , wrong speed or no speed , low or no oil pressure etc.... Taking to a qualified repair shop that has a professional scanner that can view coolant temp. data to the PCM an from the PCM to the instrument cluster , rather buying parts the vehicle doesn't need . An trying to guess the problem instead of diagnose the problem . Your vehicle may not even be overheating ,if your just going by the temp gauge.

2003 Chevrolet... | Answered on May 27, 2018

sounds like its being starved. check the fuel line and filter. also the fuel pump. could be the pump wnem it gets warmed up not giving pressure or the filter is blocked. same for the air filter. could also be too much air is in the mix broken vacuum line or gasket on manifold.. if any hissing sounds can be herd with engine running that is the sound of leaking air into engine. some times you cannot hear it or see it, you will need to spray carb cleaner over different areas if the engine sound changes or cuts out itt were the leak is.

2003 Chevrolet... | Answered on May 03, 2018

Have fuel pressure checked. Check for spark when it won't re-start by using a tool designed to check spark or hold ignition wire barely away from module , while someone tries to start engine in short bursts. Try not to make contact with vehicle besides this hand and keep clear of moving engine parts. Best to use rubber glove there is a chance you may be shocked.

2003 Chevrolet... | Answered on May 03, 2018

Have you checked for OBD2 fault codes via the diagnostic connector under the dash in front of driver? Do that first.

2003 Chevrolet... | Answered on May 01, 2018

If you are uncomfortable the mechanic you chose find another. The diagnostics and repairs will probably be the same.

2003 Chevrolet... | Answered on Apr 23, 2018

Check for a fuse in the ABS system. Normally in the underwood fuse box. May have went of the rest use

2003 Chevrolet... | Answered on Feb 26, 2018

air fuel mix is wrong, its a jumping code meaning its misfiring on all cylinders, broken valve spring would only do one cylinder, could be the timing is out or its being starved of fuel or air. or you have a vacuum leak or manifold leaking. can also be a clogged egr. . and also a clogged fuel filter, also induction flush can do more damage than good. if its not done properly the loose particles can clog up in the small veins in the engine. in away just moves a none problem oil problem to a motion problem.

2003 Chevrolet... | Answered on Feb 26, 2018

id be checking tranny fluid levels

2003 Chevrolet... | Answered on Feb 21, 2018

From the bottom...

Hello Walter Bowman, Welcome to FIXYA
(apologies for the "answerless" SPAM)

One of the previous suggested answers
(11 steps from Travis Mcilree) is the BEST, 2009).

Your TECHNICAL SERVICE Bulletins (TSBs) can be
found (totally FREE) at BBB Industries website:
BBB Industries Premium Alternators Starters Power Steering Products

Registration is required : these are typically real
FACTORY documents.

Don't even think about doing this job without
a very decent set of FLARE-NUT wrenches...

(In my day we called the "tubing wrenches")...
Like: 5 Pc Metric Double End Flare Nut Wrench Set

I believe your fittings are SAE (not METRIC)...!!

Below ... I am NOT recommending eBay seller...
Merely showing you their graphic depiction of your
high pressure and return tubes... (here)
Chevrolet GM OEM 00 05 Monte Carlo Pump Hose Power Steering Cooler Tube...

Cross check parts prices on

2003 Chevrolet... | Answered on Feb 17, 2018

check fuel pressure at the rails and check the fuel check regulator in the rails.

2003 Chevrolet... | Answered on Feb 15, 2018

I'd have to make sure battery has a full charge and battery connections all good. You can use digital multimeter across battery posts, everything off, the generic spec for a full charge is around 12.6 volts. If the battery is down, get it charged up. We can't do any testing if the battery is down.
On further testing, you can take starter motor off, lay it on the ground. Hook up jumper cables properly from charged battery to starter motor, at the least, the starter motor should spin and kick out the drive gear. If it won't do both, then I suspect the starter motor has a problem. I only mentioned the starter motor because you heard a whirring noise, maybe that noise was the starter motor spinning but not engaging the flywheel, for some reason.

2003 Chevrolet... | Answered on Feb 14, 2018

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